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Disk Utility Could Not Unmount Disk Erase

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When I go into Disk Utilities > Erase tab > change Volume Format to Mac OSX Extended > click erase, it keeps saying disk "Erase failed with the error: File system I want my Mac to be single partitioned again. The fist step has worked perfectly. Welcome to Mac-Forums! navigate here

About The Author Vishal Vishal is a Mac data recovery expert at Stellarinfo.Com. Now, take an HDD and format it to OS X extended journal 3. Skip navigation Sign inSearch Loading... It will look like ‘diskx' where ‘x' is an integer starting at 0. http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/

Couldn't Unmount Disk Mac

This will bring in the drive menu. 4) Select the newly created boot DVD from this option. This linked article may be of some assistance. Reproduction without explicit permission is prohibited.

Sign in to report inappropriate content. Reply Ben says: September 17, 2016 at 2:50 pm Is there a way to work around needing a password? Reply abdul rahaman says: February 23, 2015 at 12:04 pm I want to install couldn't Reply Gary Bridger says: June 1, 2015 at 3:25 pm Ok I guess I done this Error 69888 Couldn't Unmount Disk Working...

I am running iMac 2011 OS X 10.9. Partition Failed With The Error Couldn't Unmount Disk Loading... You said, "no go," but I'm not sure what that meant. https://discussions.apple.com/thread/5812340?tstart=0 Running Mavericks Hide Question All replies Helpful answers Page 1 of 4 Next last by Kappy, Kappy Jan 21, 2014 1:48 PM in response to studio_ Level 10 (274,105 points) Desktops

You can create, delete, format and rename EXFAT drives however the software does supports resizing of HFS, FAT and NTFS formatted hard disk drives. Couldn't Unmount Disk External Hard Drive Couldn't unmount disk, then you may have to force an unmount through the terminal. Therefore, a bootable thumb drive was a good option. Watch Queue Queue __count__/__total__ Find out whyClose Disk erase failed couldn't unmount disk Chedens Alexis SubscribeSubscribedUnsubscribe153153 Loading...

Partition Failed With The Error Couldn't Unmount Disk

Yes, add me to your mailing list. http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/ Formatting the hard drive or partition scheme will recreate new HFS file structure on the hard drive, which will be free from cryptic errors. Couldn't Unmount Disk Mac Enter your email address below: Related articles: Dual Boot OS X 10.9 Mavericks and OS X 10.8How to Resolve a "Partition Failed" Error in Mac OS XHow to Verify (& Repair) Volume Erase Failed Couldn't Open Disk If you can't remember it, reset it (you can do so from recovery mode): https://discussions.apple.com/docs/DOC-4101 Reply Jerry says: October 5, 2016 at 5:25 pm thx Reply Nate says: October 25, 2016

Reply Alan Siu says: June 26, 2016 at 8:06 am The only thing I can think of is that you're accidentally typing it wrong. check over here Regards Timothy Reply Vishal May 21, 2015 Hey Timothy, Thanks for writing to us. However, this is not applicable for the modification of the boot disk with the help of partitions or formatting. It if truth be told was once a enjoyment account it. Disk Erase Failed With The Error Couldn't Open Device

the external HD I am trying to erase is for my Time Machine BU. In that case, you'll need to boot from a separate USB drive to fix the error. ApertureAlley 72,177 views 3:03 HOW TO: Delete a partition on Mac - Duration: 1:29. http://strobelfilms.com/unmount-disk/disk-erase-failed-error-could-not-unmount-disk-lion.html I tried this but it still didn't work, it says "unable to unmount 1 or more part" or something like that.

You should now be able to erase the drive. Can't Unmount Disk Mac Hope this helps. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site.

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Back up as many of your files as possible, reformat the disk, and restore your backed-up files' I unsure of my disk right now and need some solution asap. At this point I'm not sure what else to try. It worked the 1st time for me, and i also had to stumble across the interweb minefield before finding this solution. At Least One Volume Could Not Be Unmounted Give it a shot: http://emsooriyabandara.blogspot.com/2014/11/solved-external-hard-drive-not-detected.html Reply Jaycie Turner says: December 11, 2015 at 12:06 pm Whenever I go to type the password, it has a round dot and won't let me

From the listing, look in the Identifier column for your disk identifier. And hopefully fix it from there? I will be linking this solution to other forums in the future. weblink I've never seen that.

Published on Jan 17, 2016 Category Comedy License Standard YouTube License Loading... You will need to create a bootable DVD. Claude Pelanne 25,734 views 6:01 Loading more suggestions... To learn more about the Mac OS file system: Take Mac Support for PC and Support Essentials Disclaimer: While the author has taken care to provide our readers with accurate

Retox Media 3,138 views 2:30 Mac OS X 10 11 El Capitan : Use First Aid Repair Errors - Duration: 2:57. Reply Alan Siu says: December 8, 2016 at 12:21 pm Try booting up Ubuntu and reformatting the drive (as FAT32) and then booting into Recovery Mode and re-reformatting it (as HFS+). Cox 356,526 views 5:16 Fix windows cannot be installed to this disk the selected disk is of the gpt partition style - Duration: 3:32. Reply abdul rahaman says: February 23, 2015 at 12:04 pm I want to install couldn't Reply Gary Bridger says: June 1, 2015 at 3:25 pm Ok I guess I done this

You will need any OS X boot drive to complete this task, I used a Mavericks boot installer drive for this purpose but others should work too, whether they are installation Couldn't repair, said to reformat, but couldn't erase anything either. King May 23, 2016 I am trying to restore my Mac OS X El Capitan from an external drive to my Mac HD. iDB 33,411 views 1:29 How to reset your MacBook Pro to Factory Settings without Installation Discs - Duration: 3:28.

Reply Vishal May 13, 2015 To resize the Mac startup disk, you need to create bootable DVD. All Rights Reserved. The only different thing I needed to do in terminal was to write the commands without the word "sudo". Thanks.

FOR AN ENTIRE PHYSICAL DISK: 1) Using the Terminal application again, booting from OS X Recovery or an external bootable drive. I'm not a technology person? I love you so much Reply Leave a Reply Click here to cancel reply. Reply Jeff Alexander says: April 15, 2016 at 3:18 pm I have been trying off and on for weeks to get rid of this error.

The above steps did the trick and everything was working again as expected. Easy Steps 14,351 views 4:05 How to reset your MacBook Pro to Factory Settings without Installation Discs - Duration: 3:28. How can I make this resizing possible?